Arm of carriage-axles



A. J. BELL.

Axle.

Patented Mar. 20, 1860.

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A. J. BELL, OF GREENUPSBURG, KENTUCKY.

.ARM OF CARRIAGE-AXLES.

Speccation of Letters Patent No. 27,517, dated March 20, 1860.

To all whom 'it may concern:

Be it known that I, A. J. BELL, of Greenupsburg, in the county of Greenup and State of Kentucky, have invented a new and useful Improvement in Carriage-Axles; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming a part of this specification, in which- Figure 1, is a vertical longitudinal section of a carriage axle constructed after my invention. Fig. 2, is a top view of the same. Fig. 3, is a transverse section in the line m. Fig. 4f, is a similar section in the line y, y.

Similar letters of reference, in each of the several figures indicate corresponding parts.

To enable others, skilled in the art, to make and use my invention, I will proceed to describe its construction and operation.

In constructing my axle, I employ two wrought iron bars A, B, of arch form and place between the same a solid piece of wood C. These parts are constructed and the whole united together in the following manner: On each end of the upper bar, an arm a, for the hub to turn upon is formed. These arms are very narrow, but quite deep and may be said to be placed edgewise instead of flatwise, to receive the strain, their upper edge is a part of a circle. The lower bar also has an arm on each end. These arms are very broad, but quite shallow and may be said to be placed flatwise instead of edgewise to receive the strain. The bottom of these arms form part of a circle. On each bar at the inner ends of the arms, shoulders c, are formed, and on the outer ends of both arms screw threads (Z, cl, are cut. The bars thus constructed, are placed one underneath and the other on top of the arch shape piece of wood C, and confined to the same by means of vertical bolts e, e, each of which has a shoulder to prevent the wood from losing its arch form. To further prevent this, a metallic collar g, is slipped over each of the journals, formed by the two arms a, b, of the two bars, against the shoulders of the same and firmly welded at this point. These collars form shoulders or abutments for the two bars and the wood to abut against when strain comes upon the intermediate portions thereof. Triangular collars 7L, it, with their corners rounded are, while at a red heat, slipped over the journals to a position up against the welded collars g. These collars, as they cool, shrink and thereby bring the arms b, firmly together. The axle is now completed and owing to being constructed as described, chambers or spaces z', e', for holding lubricating material, exist between the arms of the upper and lower bar.

Then the hub is placed on the axle, a nut y', is used for confining it in place, said nut being screwed on the extreme ends of the arms and thus serving the purpose stated and at the same time further uniting the upper and lower bars together.

My carriage axle is exceedingly simple and yet is very durable and light; it having the metal, which is employed, disposed so as to present the form of an arch to resist the strain, and both the wood and metal arranged to act between two abutments which sustain it against any great weight which is liable to crush it down and finally its arms are constructed so as to be capable of bearing an immense weight, the upper portion of each arm receiving the strain edge-wise and the lower portion flatwise and owing to this a space exists between the upper and lower portions, forming the hub bearing, and therefore a perfect lubrication can be kept up at all times.

What I claim as my invention and desire to secure by Letters Patent, is-

In the construction of an ordinary compound truss axle A, B, C, making each of the arms thereof in two parts a, Z), and with an oil space z', one of said parts being placed edgewise vertically and the other flatwise horizontally and both united together by a collar 71 and screw nut 17', substantially as and for the purposes set forth.

The above specification of my improvement in carriage axles signe-d and witnessed this 21st day of Jany 1860.

A. J. BELL.

Witnesses:

R. W. FENWICK, GOODWIN Y. AT LEE. 

